1000122121012 has 96 divisors (see below), whose sum is σ = 2038652098560. Its totient is φ = 420451827840.

The previous prime is 1000122121003. The next prime is 1000122121013. The reversal of 1000122121012 is 2101212210001.

It is a super-3 number, since 3×1000122121012³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1000122120983 and 1000122121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000122121013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 636614187 + ... + 636615757.

It is an arithmetic number, because the mean of its divisors is an integer number (21235959360).

Almost surely, 2^{1000122121012} is an apocalyptic number.

It is an amenable number.

1000122121012 is an abundant number, since it is smaller than the sum of its proper divisors (1038529977548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000122121012 is a wasteful number, since it uses less digits than its factorization.

1000122121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861 (or 2859 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1000122121012 its reverse (2101212210001), we get a palindrome (3101334331013).

The spelling of 1000122121012 in words is "one trillion, one hundred twenty-two million, one hundred twenty-one thousand, twelve".